**Trader sentiment for the number of VEI ≥4 eruptions in 2026 remains closely balanced between zero and one event, reflecting sparse confirmed large-scale activity through early October amid ongoing monitoring.** Frequent smaller eruptions at Indonesian volcanoes such as Semeru, Ibu, and Marapi have dominated 2026 reports, with ash plumes typically below thresholds for VEI 4 (generally 10–25 km height or ~0.1 km³ ejecta). A notable exception is the early September explosive phase at Anak Krakatau, which produced plumes reaching 15 km and disrupted aviation, meeting preliminary criteria for VEI 4 based on observed column height. Historical baselines show roughly 1–2 such events annually on average, but year-to-date data indicate no additional confirmed cases meeting official VEI standards from agencies like the Smithsonian Global Volcanism Program. With only weeks remaining, the low probabilities assigned to two or more events underscore the rarity of clustered large eruptions and the influence of real-time plume and deposit measurements on final classification.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedView resolved

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